mirror of
https://github.com/SagerNet/sing-box.git
synced 2024-11-24 09:31:30 +00:00
107 lines
3.8 KiB
Go
107 lines
3.8 KiB
Go
package socks
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import (
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std_bufio "bufio"
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"context"
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"net"
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"github.com/sagernet/sing-box/adapter"
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"github.com/sagernet/sing-box/adapter/inbound"
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"github.com/sagernet/sing-box/common/listener"
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"github.com/sagernet/sing-box/common/uot"
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C "github.com/sagernet/sing-box/constant"
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"github.com/sagernet/sing-box/log"
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"github.com/sagernet/sing-box/option"
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"github.com/sagernet/sing/common/auth"
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E "github.com/sagernet/sing/common/exceptions"
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"github.com/sagernet/sing/common/logger"
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N "github.com/sagernet/sing/common/network"
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"github.com/sagernet/sing/protocol/socks"
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)
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func RegisterInbound(registry *inbound.Registry) {
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inbound.Register[option.SocksInboundOptions](registry, C.TypeSOCKS, NewInbound)
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}
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var _ adapter.TCPInjectableInbound = (*Inbound)(nil)
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type Inbound struct {
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inbound.Adapter
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router adapter.ConnectionRouterEx
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logger logger.ContextLogger
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listener *listener.Listener
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authenticator *auth.Authenticator
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}
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func NewInbound(ctx context.Context, router adapter.Router, logger log.ContextLogger, tag string, options option.SocksInboundOptions) (adapter.Inbound, error) {
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inbound := &Inbound{
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Adapter: inbound.NewAdapter(C.TypeSOCKS, tag),
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router: uot.NewRouter(router, logger),
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logger: logger,
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authenticator: auth.NewAuthenticator(options.Users),
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}
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inbound.listener = listener.New(listener.Options{
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Context: ctx,
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Logger: logger,
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Network: []string{N.NetworkTCP},
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Listen: options.ListenOptions,
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ConnectionHandler: inbound,
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})
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return inbound, nil
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}
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func (h *Inbound) Start(stage adapter.StartStage) error {
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if stage != adapter.StartStateStart {
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return nil
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}
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return h.listener.Start()
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}
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func (h *Inbound) Close() error {
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return h.listener.Close()
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}
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func (h *Inbound) NewConnectionEx(ctx context.Context, conn net.Conn, metadata adapter.InboundContext, onClose N.CloseHandlerFunc) {
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err := socks.HandleConnectionEx(ctx, conn, std_bufio.NewReader(conn), h.authenticator, nil, adapter.NewUpstreamHandlerEx(metadata, h.newUserConnection, h.streamUserPacketConnection), metadata.Source, metadata.Destination, onClose)
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N.CloseOnHandshakeFailure(conn, onClose, err)
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if err != nil {
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if E.IsClosedOrCanceled(err) {
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h.logger.DebugContext(ctx, "connection closed: ", err)
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} else {
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h.logger.ErrorContext(ctx, E.Cause(err, "process connection from ", metadata.Source))
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}
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}
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}
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func (h *Inbound) newUserConnection(ctx context.Context, conn net.Conn, metadata adapter.InboundContext, onClose N.CloseHandlerFunc) {
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metadata.Inbound = h.Tag()
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metadata.InboundType = h.Type()
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metadata.InboundDetour = h.listener.ListenOptions().Detour
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metadata.InboundOptions = h.listener.ListenOptions().InboundOptions
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user, loaded := auth.UserFromContext[string](ctx)
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if !loaded {
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h.logger.InfoContext(ctx, "inbound connection to ", metadata.Destination)
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h.router.RouteConnectionEx(ctx, conn, metadata, onClose)
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return
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}
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metadata.User = user
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h.logger.InfoContext(ctx, "[", user, "] inbound connection to ", metadata.Destination)
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h.router.RouteConnectionEx(ctx, conn, metadata, onClose)
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}
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func (h *Inbound) streamUserPacketConnection(ctx context.Context, conn N.PacketConn, metadata adapter.InboundContext, onClose N.CloseHandlerFunc) {
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metadata.Inbound = h.Tag()
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metadata.InboundType = h.Type()
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metadata.InboundDetour = h.listener.ListenOptions().Detour
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metadata.InboundOptions = h.listener.ListenOptions().InboundOptions
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user, loaded := auth.UserFromContext[string](ctx)
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if !loaded {
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h.logger.InfoContext(ctx, "inbound packet connection to ", metadata.Destination)
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h.router.RoutePacketConnectionEx(ctx, conn, metadata, onClose)
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return
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}
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metadata.User = user
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h.logger.InfoContext(ctx, "[", user, "] inbound packet connection to ", metadata.Destination)
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h.router.RoutePacketConnectionEx(ctx, conn, metadata, onClose)
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}
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